Java multithreading Series 2-thread control, java multithreading 2-Thread

Java multithreading Series 2-thread control, java multithreading 2-Thread

The previous article has introduced thread scheduling. Next I will introduce how to use this method to control threads.

1. Thread sleep

Public static void sleep (long millis)

/** Thread sleep * public static void sleep (long millis) */public class ThreadSleepDemo {public static void main (String [] args) {ThreadSleep ts1 = new ThreadSleep (); threadSleep ts2 = new ThreadSleep (); ThreadSleep ts3 = new ThreadSleep (); ts1.setName ("zhangsan"); ts2.setName ("lisi"); ts3.setName ("wangwu "); ts1.start (); ts2.start (); ts3.start () ;}} public class ThreadSleep extends Thread {@ Override public void run () {for (int x = 0; x <100; x ++) {System. out. println (getName () + ":" + x + ", Date:" + new Date (); // sleep try {Thread. sleep (1000);} catch (InterruptedException e) {e. printStackTrace ();}}}}

2. Add threads

Public final void join ()

Public class ThreadJoin extends Thread {@ Override public void run () {for (int x = 0; x <100; x ++) {System. out. println (getName () + ":" + x) ;}}/** public final void join (): waiting for the thread to terminate. */Public class ThreadJoinDemo {public static void main (String [] args) {ThreadJoin tj1 = new ThreadJoin (); ThreadJoin tj2 = new ThreadJoin (); threadJoin tj3 = new ThreadJoin (); tj1.setName ("zhangsan"); tj2.setName ("lisi"); tj3.setName ("wangwu"); tj1.start (); try {tj1.join ();} catch (InterruptedException e) {e. printStackTrace () ;}tj2.start (); tj3.start ();}}

3. Thread courtesy

Public static void yield ()

Public class ThreadYield extends Thread {@ Override public void run () {for (int x = 0; x <100; x ++) {System. out. println (getName () + ":" + x); Thread. yield () ;}}/ ** public static void yield (): Pause the currently running thread object and execute other threads. * It makes the execution of multiple threads more harmonious, but it cannot be used to ensure a single thread at a time. */Public class ThreadYieldDemo {public static void main (String [] args) {ThreadYield ty1 = new ThreadYield (); ThreadYield ty2 = new ThreadYield (); ty1.setName ("zhangsan "); ty2.setName ("lisi"); ty1.start (); ty2.start ();}}

4. Background thread

Public final void setDaemon (boolean on)

Public class ThreadDaemon extends Thread {@ Override public void run () {for (int x = 0; x <100; x ++) {System. out. println (getName () + ":" + x) ;}}/ ** public final void setDaemon (boolean on): Mark this thread as a daemon thread or user thread. * When all running threads are daemon threads, the Java Virtual Machine exits. This method must be called before the thread is started. **/Public class ThreadDaemonDemo {public static void main (String [] args) {ThreadDaemon td1 = new ThreadDaemon (); ThreadDaemon td2 = new ThreadDaemon (); td1.setName ("zhangsan"); td2.setName ("lisi"); // set the harvest Thread td1.setDaemon (true); td2.setDaemon (true); td1.start (); td2.start (); Thread. currentThread (). setName ("wuyudong"); for (int x = 0; x <5; x ++) {System. out. println (Thread. currentThread (). getName () + ":" + x );}}}

5. Thread interruption

Public final void stop ()

Public void interrupt ()

Import java. util. date; public class ThreadStop extends Thread {@ Override public void run () {System. out. println ("start execution:" + new Date (); // I want to rest for 10 seconds try {Thread. sleep (10000);} catch (InterruptedException e) {// e. printStackTrace (); System. out. println ("thread terminated");} System. out. println ("end execution:" + new Date () ;}/ ** public final void stop (): stops the thread. It is out of Date, but can also be used. * Public void interrupt (): interrupt thread. Terminate the thread state and throw an InterruptedException. */Public class ThreadStopDemo {public static void main (String [] args) {ThreadStop ts = new ThreadStop (); ts. start (); // if you do not wake up for more than three seconds, try {Thread. sleep (3000); // ts. stop (); ts. interrupt ();} catch (InterruptedException e) {e. printStackTrace ();}}}